The pair star in the hit BBC show together as husband and wife, Aidan as Ross Poldark and Eleanor as Demelza Poldark.

But this close bond has grown between the actors as the characters develop with each new season.

He said: "The relationship between Ross and Demelza has always felt very real for Eleanor and I, that’s why it is so enjoyable to play.

"We can really track the progress of their relationship and when we go to shoot a scene and we do our research on what has come before, it is easy to join the dots and to see where they are at and why."

Aidan admitted to the BBC that when they work on set together, it's when he's looking into Eleanor's eyes that the relationship feels even more real and he's able to relate to her in the moment.

He added: "Eleanor and myself have worked together for so long now that we are very familiar with each other and our relationship progresses alongside the relationship between our characters.

"When we are doing these scenes you’re just looking into that person’s eyes and you are relating to them on that platform and in that context and it feels like any relationship would feel, it is very real for us."